水泵

In accordance with the established design flow and design of lift in the type spectrum, the first ordinate in order to design the head to find out the requirements in line with the head, while the flow ranging from a few pumps, and then in the abscissa in order to design the flow to determine the selection of What kind of pump.

根据确定的设计流量和设计扬程，在型谱图上，首先在纵坐标上以设计扬程查找出符合扬程要求。而流量不等的几种水泵，然后再在横坐标上以设计流量来确定选用哪一种水泵。

The correct affusion operation and reasonable installation of collecting gas jar are introduced in order to eliminate air effectively.

对于因不合理的安装方式而造成循环泵的抽空现象(即水泵的吸入口呈空气和水的混合状态，使水泵达不到应有的额定流量)，实施了改进。

The failure characteristics of large pump units are that the influence is great, the reasons are complicated, it is difficult to observe and the failure rate is hard to determine. The main failures of large pump units are as follows: burn out of thrust bearing liner of the motor, failure of stator and rotor coil insulation of the motor, wear-and-tear of guiding bearing and shaft neck of the pump, breakdown of adjusting mechanism of the pump blade, and pump cavitation. The reasons of main failures are studied in design, structures, installation and operation etc.

分析了大型水泵机组故障的特点：影响大、原因复杂、隐蔽性强和故障率确定难；确定了主要故障形式：电机推力瓦烧损，电机线圈绝缘失效，水泵导轴承及轴颈磨损，叶片调节机构失效，水泵汽蚀；从设计、结构、安装和运行等方面研究了主要故障的原因。

The present number of 368 corporate employees, annual sales of 80,000,000 yuan, annual production of more than 12,000 tons of various casting and foundry equipment production, the main production facilities, such as the United States Hunter production line in Zhejiang round of the Bank of Machinery Co., Ltd., Zhejiang Leo shares Ltd., the first Shanghai Textile Machinery Plant, China Precision Machine Tool Plant Jack, Warner, Ningbo and Taizhou of good casting Co., Ltd., Suzhou Wujiang David Weir Iron Foundry Co., Ltd., Xianju Hydraulic Casting Plant, Sally Home Shuangshi foundry, Xianju Hengxi machinery plant, Linhai City, a strong metal Manufacturing Co., Ltd., Zhejiang Province made a total of Linjiang Casting Co., Ltd., Taizhou ......, Bo Li Machinery Co., Ltd. and Italy for the meat grinder, Spain pumps, water pumps Perkins Germany, the United States Cummins customers abroad pumping facilities and so on.

本企业现有职工人数368人，年销售8000万元，年生产各类铸件12000多吨及铸造设备制作，主要生产配套，如美国亨特生产线、浙江银轮机械股份有限公司、浙江利欧股份有限公司、上海第一纺织机械总厂、中国杰克精密机床厂、宁波华纳公司、台州通顺铸造有限公司、苏州吴江市震堰球铁铸造有限公司、仙居液压件二厂铸造公司、仙居双狮铸造厂、仙居横溪机械厂、临海市坚强金属制造有限公司、浙江临江共发铸造有限公司、台州博立机械有限公司。。。。。。，并为意大利绞肉机、西班牙水泵、德国帕金斯水泵、美国康明斯水泵等国外客户配套。

Theory and calculation formulae of the turbine efficiency measuring method based on pump shaft power measuring are elucidated.

笔者首先采用热力学方法，从给水泵端着手，用测量给水泵轴功率的方法来测量给水泵汽轮机的效率，对该测量方法的原理和计算公式进行了阐述。

This article according to the actual application of Rapid-drop gate, meanwhile combine the entire characteristics test of pump model which was developed on the high accuracy pump model test platform of the south-to-north water transferring project water the model, mainly includes the water pump operating mode, the water pump applies the brake the operating mode and the hydraulic turbine operating mode, take a runner as the object, makes 3 to place the angle to 5 leaf blades the entire characteristics test.

本文根据快速闸门的实际运用情况，同时结合了高精度南水北调工程水泵模型同台测试试验台上开展的模型泵全特性试验，试验主要包括水泵工况、水泵制动工况和水轮机工况，以一个转轮为对象，做3至5个叶片安放角度的全特性试验。

The author presented a theoretical and experimental study on pump transmission characteristics of a system including a rotation system of shaft as well as hydraulic circuit.

所叙述的水泵传递特性理论与实验研究，传递系统除水压和流量特性之外，还包含了水泵转轴的转动力矩和转动速度特性，从而较为完整地表现包含水力与动力两方面的水泵总体特性。

Establishing on the foundation of the project of 'the monitoring state and maintenance assist support system of feed pump for 300MW unit, Shiheng Power Plant, Shandong', this paper's content comprise on-line monitoring and thermodynamic calculation on small steam turbine for feed water pump, and supply the necessary data for feed water pump's performance analysis, trouble analysis and small steam turbine's performance analysis, optimization, heat stress calculation and tremble monitoring.

本论文的内容是建立在&山东石横电厂给水泵状态监测与维修辅助支持系统&项目基础上，涉及大型机组锅炉给水泵驱动用小汽轮机进行在线监测和热力计算，为给水泵的性能分析、故障分析以及小汽轮机的性能分析和优化、热应力计算和震动监测提供必需的数据。

Inside fire pipes and indoor fire hydrant or firefly are connected by fire department connection that is a sort of connection equipment,whether the fire hydrant systems or the sprinkler systems,the relationship between fire department connection and outside fire hydrant is described 1:1 quantity relation.outside fire hydrant must be increased in order to meet with 15～40 meter distance that the fire department connection from the outside fire hydrant,suggesting setting up a special circle fire pipe in the outside for setting the outside fire hydrant.

1问题的提出水泵接合器是连接室内消防管网与室外消火栓或消防车的连通器。当室内消防泵发生故障或遇大火室内消防用水不足时，消防车从室外消火栓或储水池取水，通过水泵接合器将水送到室内消防给水管网用于灭火，水泵接合器是消防安全供水的又一个保证。

They are F.O. pumps, ballast pumps, fresh water pumps, sea water pumps, and bilge pumps.

它们是燃油泵，润滑油泵，压载水泵，淡水泵，海水泵，和舭部液舱泵等。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。